Damian Thompson is Editor of Telegraph Blogs and a columnist for the Daily Telegraph. He was once described by The Church Times as a "blood-crazed ferret". He is on Twitter as HolySmoke. His latest book is The Fix: How addiction is taking over your world. He also writes about classical music for The Spectator.

My JFK assassination souvenir: is this in good taste?

If that building looks familiar, today of all days, you shouldn't be surprised. I bought this mug in 1998 when I visited The Sixth Floor Museum – previously known as the Texas Book Depository. Sometimes I make a coffee for friends and they'll look at it and say: "Oh, I've just realised how tasteless this is." Is it? I don't know; but when the museum offers you the chance to stand at the window from where Oswald shot Kennedy – well, you take it.